Question: What award did Dmitry Khvorostovsky achieve in 1991?
Paraphrase: What award was presented to Dmitry Khvorostovsky in 1991?
SPARQL (Wikidata): SELECT ?obj WHERE { wd:Q333201 p:P166 ?s . ?s ps:P166 ?obj . ?s pq:P585 ?x filter(contains(YEAR(?x),'1991')) }